7 US Pre-GPS Space Based Navigation Proposals: A)Angle 1)
Edward Everett Hale, The Brick Moon, 1869 B)Doppler 1) Lovell
Lawrence, Jr., "Navigation by Satellites", Missiles and Rockets,
1956 2) Transit - George Weiffenbach and William Guier, Applied
Physics Laboratory - 1958 C) Range Measurement 1) TIMATION - Naval
Research Laboratory - Roger Easton - 1964 2) Roy Anderson - GE/NASA
1964 3) 621B - Air Force/Aerospace - 1964 4) SECOR -SEquential
COllation of Range - Army
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8 Edward Everett Hale
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9 Guier, McClure and Weiffenbach
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10 Roy Anderson
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11
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12
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13 Vanguard TV-3 explodes
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14
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1967 Chronology
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Celestial Transformation
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Brad Parkinson
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GNSS Systems 1) GPS US 2) GLONASS (Global Navigation Satellite
System) Soviet Union/Russia 3) Galileo Europe 4) Compass/BeiDou
Navigation Satellite System - China 5) Japan 6) India